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Constant channel rotary packed bed mass transfer and reaction equipment

A technology of rotating packed bed and reaction equipment, which is applied in the direction of chemical methods for reacting liquid and gaseous media, separation of dispersed particles, chemical instruments and methods, etc., and can solve unfavorable equipment enlargement and maintenance, uneven distribution of packing fluid, operation Problems such as large moment of inertia, to achieve significant moment of inertia, extended operating life, and reduced power consumption

Active Publication Date: 2017-12-08
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] A large amount of public information shows that there is a phenomenon of uneven distribution of gas and liquid in the rotating packed bed, such as figure 1 shown
这主要是因为现有的旋转填料床气液流通截面是变化的(CN 1059105,CN 1156639,CN1116125,CN 101125263,CN 101254355,CN1415396, CN 1686591, CN 101229502, CN101229503, CN 101234261,CN 101254356,CN 101254357 , CN 101890250A, CN101898047A), taking the gas-liquid counter-flow traditional rotary packed bed (CN 1020036) as an example, the flow cross-sectional area of ​​the gas is a process of shrinking, while the cross-sectional area of ​​the liquid is a process of expansion, this change causes Uneven distribution of fluid inside the packing
This will cause the following effects: (1) The utilization rate of packing is low, and gas-liquid interaction mass transfer and reaction do not occur on most packing; (2) Part of the gas overflows from the gap formed by uneven liquid distribution, which affects the mass transfer performance Enhance the mass transfer coefficient of the liquid phase; (3) The amount of filler is large, and the moment of inertia of operation is large, which is not conducive to the expansion and maintenance of equipment

Method used

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  • Constant channel rotary packed bed mass transfer and reaction equipment
  • Constant channel rotary packed bed mass transfer and reaction equipment
  • Constant channel rotary packed bed mass transfer and reaction equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1: figure 2 As shown, a gas-liquid co-current constant channel rotary packed bed, its gas inlet and liquid inlet are both set on the top of the shell, the gas outlet is set on the side wall of the shell, the liquid outlet is set on the bottom of the shell, and the gas and liquid are arranged in the packing circulate in parallel. The specific process of mass transfer and reaction is as follows: gas enters from the gas inlet and enters the rotating packing; liquid enters from the liquid inlet, enters the liquid distributor, and sprays on the rotating packing; The area remains the same, the liquid hits the metal baffle on its side, a part of the liquid is directly splashed and atomized, and is captured by the bulk filler filled in part A of the filler, and further dispersed; the other part gathers on the metal baffle of part A of the filler and is thrown away out, and is then captured and dispersed by the bulk filler filled in Filler A Part. The liquid then coll...

Embodiment 2

[0016] Example 2: image 3 As shown, a gas-liquid countercurrent constant channel rotary packed bed, the gas inlet is set on the side wall of the shell, the liquid inlet and gas outlet are set on the top of the shell, the liquid outlet is set on the bottom of the shell, and the gas and liquid are in the packing with Countercurrent circulation. The specific process of mass transfer and reaction is as follows: gas enters from the gas inlet and enters the rotating packing; liquid enters from the liquid inlet, enters the liquid distributor, and sprays on the rotating packing; There is no change in the area, the liquid hits the metal baffle on its side, a part of the liquid is directly splashed and atomized, and is captured by the bulk filler filled in part A of the filler, and further dispersed; the other part gathers on the metal baffle of part A of the filler and is thrown away out, and is then captured and dispersed by the bulk filler filled in Filler A Part. The liquid then ...

experiment example 1

[0017] Experimental example 1: using figure 2 structure of the device for H 2 Removal of S gas, H 2 S concentration is 2000mg / m 3 About, when the system temperature is (32±2)℃, the liquid-gas ratio is 10L / m 3 , the rotation speed is 1000r / min, and the soda ash is 12g / L, when the θ value of the equipment is 90°, the hydrogen sulfide single-stage removal rate is 99.4%.

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Abstract

The invention belongs to the technical field of reaction and mass transfer in a supergravity field, and aims to solve the problem that the existing supergravity reaction and mass transfer equipment has a low filler utilization rate; affects the mass transfer performance; the amount of filler is large, and the moment of inertia is large, which is not conducive to the enlargement and operation of the equipment. To solve maintenance and other problems, a constant channel rotary packed bed mass transfer and reaction equipment is provided. The filler is a concentric ring composed of filler A and filler B alternately; filler A is a gas-liquid circulation channel, which is composed of several six-sided cubes, and the inner and outer surfaces in the radial direction are wound by wire mesh, and the rest The four planes are composed of metal plates, and the interior is filled with bulk packing; part B of the packing is the structural support of the fan-shaped body, and the five planes are all composed of metal plates. The gas-liquid distribution is significantly improved, and the mass transfer coefficient of the gas-liquid phase is improved; the cost of high-gravity equipment is reduced, the moment of inertia is significantly reduced, the wear of the drive shaft is improved, the gas film control process is strengthened, and it can be used for low-concentration gases the absorption process.

Description

technical field [0001] The invention belongs to the technical field of reaction and mass transfer in a supergravity field, and in particular relates to a constant channel type rotary packed bed mass transfer and reaction equipment. Background technique [0002] Rotating packed bed is a new type of mass transfer and reaction equipment using supergravity technology, which has the advantages of high mass transfer efficiency, low liquid flooding, low energy consumption, and equipment intensification. Under the condition of supergravity, the gravitational acceleration g is very large, the dynamic factor of the two-phase contact, that is, the buoyancy factor Δ(ρg), is very large, the relative slip velocity of the fluid is large, and the huge shear stress overcomes the surface tension, so that the phase interface is quickly updated, The liquid stretches out a huge interphase contact surface, which greatly enhances the mass transfer process. Deoxidation by water injection in oil fi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/18B01J10/00
Inventor 焦纬洲刘有智袁志国祁贵生张巧玲栗秀萍申红艳高璟罗莹俸志荣
Owner ZHONGBEI UNIV